Improvement in the mode of



UNITED *STATES-` PATENT OFFICE.

DELECTUS DURFEY, OF FORT SENECA, ASSIGNOR TO HIMSELF, L. A. LYON, AND H.P. TYLER, OF CLARKSFIELD, OHIO.

IMPROVEMENT IN THE MODE OF APPLYING POWER TO MACHINERY.

Specification forming part of Letters Patent No. 25,361, dated September6, 1859.

To cZZZ whom it may concern:

Be it known that I, DELECTUS DURFEY, of Fort Seneca, county of Seneca,and State of Ohio, have invented a new and Improved Mode of ApplyingPower to Machinery; and I do hereby declare that the following is a fulland exact description thereof, reference being had to the accompanyingdrawings, and to theletters of reference marked thereon, in Which-Figure lis a plan view. Fig. 2 is a sectional side elevation.

The nature of my invention consists in the manner of applying power tomachinery by the `groove-wheels, levers, and springs, as hereinafterdescribed.

To enable others skilled in the art to make and use my invention, I willdescribe its construction and operation.

In the construction of my machine, in Fig. 1, where the machinery isapplied to driving a circular saw, A is the frame; B, the grooveddriving-wheels; C, the springs to raise the treadle-levers; D, largegear-wheel on saine shaft with wheels B; E, small gear-wheel on shaft Efor increasing the motion; D', the large gear-wheel on shaft E', gearingin to gearwheel F on shaft F2, on which is hung the band-wheel I; F, thesaw; G, the treadle-levers; G2, arms hanging loosely on the shafta andextending out to receive the treadle-arms which are bolted firmlybetween them; H, the hinges of the lid.

In Fig. 2 the same letters designate like parts as in Fig. l. K is thespring-brace operating in the grooved wheels B; J, the cover or topplatform, and Z the fulcra-bolts of spring-braces K.

In the operation of my invention it will be seen that the spring-bracesK, being attached to fulcraZ on treadles g and hung on the shaft a, aresuspended by springs C. When thus arranged, the V-shaped ends of thebraces K fit into the V-grooves on the wheels B. When not in use, thetreadles are drawn up by the coiled springs C.

To operate, it is necessary for a man to take his position on thetreadles g, with a foot on each, and then to stand with one foot on oneof the treadles. This weight Will cause the end of the brace to catchinto the groove, which will revolve the wheel. Then by changing thepressure of his weight to the other foot the other wheel is operated inthe same way, and thus before the impulse first given is expended theother wheel is operated on inlike manner, and by thus continuing tothrow his weight alternately on the treadles g a constant motion isgiven to themachine. It will be further seen that by means of myinvention the whole weight of the man is at all times on the machine,and at no point is any of the weight lost. No effort of the muscles inpressure is needed. I-Ie only has to raise his foot and change theweight of his body alternately from one foot to the other, thus-producing a constant power on the machine. By this invention a fasteror slower motion can be given to the saw or other machinery to which itmay be applied. If a slow motion be required, let the power be appliedat the extremity of the levers, and if a quicker motion be required thenlet power be applied clear up to the machinery, and it is obtained, andit will be found that in this arrangement one man by the use of hiswhole weight on the machine is equal at least to the power of three menas ordinarily applied to a treadle of ordinary construction.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

l. The shaped groove in driving-wheel B, in combination with frictionspring-brace K, fitting into the same, operating as described, and forthe purposes set forth.

2. The combination of the-treadle-levers g, arms g2, and spring C withthe grooved wheel B and spring-braces K, operating asdescribed, and forthe purposes set forth.

DELECTUS DURFEY. Witnesses:

JOHN N. BARNUM, J. E. I-IANEORD.

